For years, the energy industry has been looking to seaweed to become the next big source of biofuel. But the algae plant has its drawbacks. Much of its energy is stored in a form of sugar that is difficult to tap into; this snag drives the cost of biofuel produced from seaweed up, and its viability as an alternative… »1/20/12 7:22am 1/20/12 7:22am